| Study | Bulk density (g/cm3) | Sand type | Location |
| A [36] | 1.64 | Medium sand | Amazon river |
| B [15] | 1.65 | Fine to medium sand | Mississippi river Nile |
| C [37] | 1.68 | Fine sand | River |
| D [38] | 1.72 | Fine to medium sand | Danube river |